Redox flow battery cell stack



FIG. 1 is a front view of a first embodiment of a redox flow battery cell stack showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front, top, right side perspective view thereof;

FIG. 8 is a referential top plan view thereof;

FIG. 9 is a cross-sectional view taken along a combination of lines 9A-9B-9C-9D-9E-9F thereof;

FIG. 10 is a rear, bottom, left side perspective view thereof;

FIG. 11 is a front view of a second embodiment of a redox flow battery cell stack showing our new design;

FIG. 12 is a rear view thereof;

FIG. 13 is a right side view thereof;

FIG. 14 is a left side view thereof;

FIG. 15 is a top plan view thereof;

FIG. 16 is a bottom plan view thereof;

FIG. 17 is a front, top, right side perspective view thereof;

FIG. 18 is a referential top plan view thereof;

FIG. 19 is a cross-sectional view taken along a combination of lines 19A-19B-19C-19D-19E-19F thereof; and,

FIG. 20 is a rear, bottom, left side perspective view thereof. 

CLAIM The ornamental design for a redox flow battery cell stack, as shown and described. 